Talkswitch 48-CA User Manual page 95

'hangup' signal from the phone company called a CPC or Disconnect Clear signal. If
the line has 'shorts' or the line card at the central office is defective, then CPC
signals in the 250ms range might come down the line and cause TalkSwitch to
hangup. Try bumping up this value if this seems to be occurring.
Ringback Control:
If an extension seems to ring back as if a caller was on hold, but when answered, no
one is there, this could indicate a debounce problem with the phone hookswitch.
When someone at the extension hangs up, the handset bounces slightly to cause a
flash signal to be seen by TalkSwitch before the hang up. As a result TalkSwitch puts
the line on hold. To help with this problem, this value can be increased to the point
where it will stop the ringbacks.
Fax Detection:
If fax calls are not being directed properly to the fax machine, then you may need to
set this option to detect 1 tone. If it's set to detect 1 tone and people complain they
have been accidentally routed to the fax machine, then set this value to detect 2
tones.
VoIP Ports:
The default SIP signalling port is 5060. If you need to choose another port, then enter
a value between 1024 and 16556.
The starting RTP port for TalkSwitch is 6000. From this starting point, TalkSwitch
needs 4 ports for each TalkSwitch unit. RTP ports are even numbered from the start
port. ie. 6000, 6002, 6004 and 6006 are needed for the first TalkSwitch unit on a LAN
and 6030, 6032, 6034 and 6036 would be used for the fourth unit.
These are the ports that this TalkSwitch system listens on as opposed to the port it
needs to communicate with at the other end. for example if your SIP server at another
location uses port 5061 instead of 5060 for signalling, then you would not set this
port to 5061, you would need to include the port number in the address specified in
the VoIP Configuration section of the software.
Example: Proxy Server Name: 222.234.432.234:5061
C o n f i g u r i n g T a l k S w i t c h 8 9